1. During the sintering process of Lifepo4, the possibility of iron oxide has the possibility of being restored to a single iron in a high -temperature reduction atmosphere. Single -quality iron will cause micro -short circuits of the battery, which is the most taboo substance in the battery. This is also the main reason why Japan has not regarded the material as a dynamic lithium -ion battery positive electrode material.

2. There are some performance defects in LIFEPO4. For example, the density and density of vibration and density are very low, resulting in low energy density of lithium -ion batteries. The low temperature performance is poor, and this problem has not been solved even if it is nanocketized and carbon covered. When the director of the Energy Storage System Center of the Agan National Laboratory in the United States said that when talking about the low temperature performance of lithium -phosphate iron batteries, he used Terrible to describe the test results of the Lifepo4 lithium -ion battery indicating that the LifePO4 battery could not be at low temperature (below 0 ℃) cannot Make electric vehicles. Although some manufacturers claim that the capacity maintenance rate of lithium iron phosphate iron batteries is not bad at low temperatures, it is when the discharge current is small and the discharge intercept voltage is very low. In this case, the device cannot start the work at all.

3. The cost of preparation of materials is high and the manufacturing cost of the battery, the yield rate of battery is low, and the consistency is poor. Although the nano -nanoclacosis and carbon covering of LIFEPO4 has improved the electrochemical properties of the material, it also brings other problems, such as reduced energy density, improvement of synthetic costs, poor electrode processing performance, and harsh environmental requirements. Although the chemical elements in LIFEPO4 are rich in Li, Fe, and P, and the cost is low, the cost of the prepared LIFEPO4 products is not low. Even if the cost of the previous R & D cost is removed, the cost of the material of the material plus the higher preparation battery Costs will make the cost of energy storage in the final unit higher.

4. Poor product consistency. There is currently no LIFEPO4 material factory in China that can solve this problem. From the perspective of material preparation, the synthesis response of LIFEPO4 is a complicated multi -phase reaction, including solid phase phosphate, iron oxides, and lithium salt, carbon front drive body and reducing gas phase. In this complex response process, it is difficult to ensure the consistency of the reaction.

5. Intellectual property issues. The basic patent of LifePo4 is currently owned by the University of Texas, and the carbon coating patent is applied by Canadians. These two basic patents cannot go around. If the patent use fee is calculated in the cost, the product cost will be further increased.

The advantages of Lifepo4 batteries are safe, environmentally friendly, and high in cycle times. not tall. However, this problem can be effectively solved through the appropriate method of preparing equipment, preparation process and element doping.